kitio.aiOtio vs Paper Digest
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Otio starts at $7/mo and Paper Digest starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Chat with citations
- Video and podcast summaries
- AI PDF reader and OCR
- Multiple AI models
- Zotero and cloud integrations
- Agentic research
- Paper highlights
- Literature review generation
- Conference digests
- Paper search
- Daily updates
| Feature | Otio | Paper Digest |
|---|---|---|
| Best for | AI research workspace for PDFs, videos and web pages | AI summaries and literature reviews generated from research papers |
| Category | Research & search | Research & search |
| Pricing model | Freemium | Freemium |
| Starting price | $7/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Otio | Paper Digest |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Otio starts at $7/mo and Paper Digest starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- Limited monthly AI usage
- 10 files up to 25 MB each
- 1 space and 2 parallel chats
Lite
$7/mo billed yearly
- Agentic research and documents
- 50 uploads per day
- 2 spaces
Go
$18/mo billed yearly
- 3x more chats and research
- 250 uploads per day
- 5 spaces
Pro
$45/mo billed yearly
- 10x more chats and research
- 500 uploads per day
- Parallel research across projects
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Otio
- Cites the page for each answer
- Handles many source types
- Free plan to start
- Free plan has limited AI usage
- Prices show yearly billing by default
- Upload limits apply on each tier
Paper Digest
- Quick paper highlights
- Useful conference digests
- Free core features
- Strongest in computer science
- Dated website design
Which one should you choose?
Choose Otio if you want:
- Cites the page for each answer
- Handles many source types
- Free plan to start
Watch out: free plan has limited ai usage.
Choose Paper Digest if you want:
- Quick paper highlights
- Useful conference digests
- Free core features
Watch out: strongest in computer science.
Otio vs Paper Digest FAQ
What is the difference between Otio and Paper Digest?
Otio: AI research workspace for PDFs, videos and web pages. Paper Digest: AI summaries and literature reviews generated from research papers. Both are research & search tools.
Is Otio or Paper Digest cheaper?
Otio starts at $7/mo and Paper Digest starts at See pricing page. Check both pricing pages for current plans.
Do Otio and Paper Digest have free plans?
Otio: Yes. Paper Digest: Yes.
Who makes Otio?
Otio is made by Otio.
Who makes Paper Digest?
Paper Digest is made by Paper Digest.
Which should I choose, Otio or Paper Digest?
Choose Otio if you value cites the page for each answer and handles many source types. Choose Paper Digest if you value quick paper highlights and useful conference digests.